mirror of
https://git.salome-platform.org/gitpub/modules/smesh.git
synced 2025-01-28 16:40:33 +05:00
PAL13615 (EDF PAL 315/31 GEOM SMESH : meshing of a "5 edges quadrangle")
add GetLength(const SMESH_Mesh* aMesh, const double edgeLength)
This commit is contained in:
eap
parent
a7051ca684
commit
1863381f98
@ -97,92 +97,133 @@ void StdMeshers_AutomaticLength::SetFineness(double theFineness)
|
|||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
//================================================================================
|
namespace {
|
||||||
/*!
|
|
||||||
* \brief Return pointer to TopoDS_TShape
|
|
||||||
* \param theShape - The TopoDS_Shape
|
|
||||||
* \retval inline const TopoDS_TShape* - result
|
|
||||||
*/
|
|
||||||
//================================================================================
|
|
||||||
|
|
||||||
inline const TopoDS_TShape* getTShape(const TopoDS_Shape& theShape)
|
//================================================================================
|
||||||
{
|
/*!
|
||||||
return theShape.TShape().operator->();
|
* \brief Return pointer to TopoDS_TShape
|
||||||
|
* \param theShape - The TopoDS_Shape
|
||||||
|
* \retval inline const TopoDS_TShape* - result
|
||||||
|
*/
|
||||||
|
//================================================================================
|
||||||
|
|
||||||
|
inline const TopoDS_TShape* getTShape(const TopoDS_Shape& theShape)
|
||||||
|
{
|
||||||
|
return theShape.TShape().operator->();
|
||||||
|
}
|
||||||
|
|
||||||
|
//================================================================================
|
||||||
|
/*!
|
||||||
|
* \brief computes segment length by S0 and edge length
|
||||||
|
*/
|
||||||
|
//================================================================================
|
||||||
|
|
||||||
|
const double a14divPI = 14. / PI;
|
||||||
|
|
||||||
|
inline double segLength(double S0, double edgeLen, double minLen )
|
||||||
|
{
|
||||||
|
// PAL10237
|
||||||
|
// S = S0 * f(L/Lmin) where f(x) = 1 + (2/Pi * 7 * atan(x/5) )
|
||||||
|
// =>
|
||||||
|
// S = S0 * ( 1 + 14/PI * atan( L / ( 5 * Lmin )))
|
||||||
|
return S0 * ( 1. + a14divPI * atan( edgeLen / ( 5 * minLen )));
|
||||||
|
}
|
||||||
|
|
||||||
|
//================================================================================
|
||||||
|
/*!
|
||||||
|
* \brief Compute segment length for all edges
|
||||||
|
* \param theMesh - The mesh
|
||||||
|
* \param theTShapeToLengthMap - The map of edge to segment length
|
||||||
|
*/
|
||||||
|
//================================================================================
|
||||||
|
|
||||||
|
void computeLengths( SMESHDS_Mesh* aMesh,
|
||||||
|
map<const TopoDS_TShape*, double> & theTShapeToLengthMap,
|
||||||
|
double & theS0,
|
||||||
|
double & theMinLen)
|
||||||
|
{
|
||||||
|
theTShapeToLengthMap.clear();
|
||||||
|
|
||||||
|
TopoDS_Shape aMainShape = aMesh->ShapeToMesh();
|
||||||
|
|
||||||
|
// Find length of longest and shortest edge
|
||||||
|
double Lmin = DBL_MAX, Lmax = -DBL_MAX;
|
||||||
|
TopTools_IndexedMapOfShape edgeMap;
|
||||||
|
TopExp::MapShapes( aMainShape, TopAbs_EDGE, edgeMap);
|
||||||
|
for ( int i = 1; i <= edgeMap.Extent(); ++i )
|
||||||
|
{
|
||||||
|
TopoDS_Edge edge = TopoDS::Edge( edgeMap(i) );
|
||||||
|
//if ( BRep_Tool::Degenerated( edge )) continue;
|
||||||
|
|
||||||
|
Standard_Real L = SMESH_Algo::EdgeLength( edge );
|
||||||
|
if ( L < DBL_MIN ) continue;
|
||||||
|
|
||||||
|
if ( L > Lmax ) Lmax = L;
|
||||||
|
if ( L < Lmin ) Lmin = L;
|
||||||
|
|
||||||
|
// remember i-th edge length
|
||||||
|
theTShapeToLengthMap.insert( make_pair( getTShape( edge ), L ));
|
||||||
|
}
|
||||||
|
|
||||||
|
// Compute S0
|
||||||
|
|
||||||
|
// image attached to PAL10237
|
||||||
|
|
||||||
|
// NbSeg
|
||||||
|
// ^
|
||||||
|
// |
|
||||||
|
// 10|\
|
||||||
|
// | \
|
||||||
|
// | \
|
||||||
|
// | \
|
||||||
|
// 5| --------
|
||||||
|
// |
|
||||||
|
// +------------>
|
||||||
|
// 1 10 Lmax/Lmin
|
||||||
|
|
||||||
|
const int NbSegMin = 5, NbSegMax = 10; // on axis NbSeg
|
||||||
|
const double Lrat1 = 1., Lrat2 = 10.; // on axis Lmax/Lmin
|
||||||
|
|
||||||
|
double Lratio = Lmax/Lmin;
|
||||||
|
double NbSeg = NbSegMin;
|
||||||
|
if ( Lratio < Lrat2 )
|
||||||
|
NbSeg += ( Lrat2 - Lratio ) / ( Lrat2 - Lrat1 ) * ( NbSegMax - NbSegMin );
|
||||||
|
|
||||||
|
double S0 = Lmin / (int) NbSeg;
|
||||||
|
MESSAGE( "S0 = " << S0 << ", Lmin = " << Lmin << ", Nbseg = " << (int) NbSeg);
|
||||||
|
|
||||||
|
// Compute segments length for all edges
|
||||||
|
map<const TopoDS_TShape*, double>::iterator tshape_length = theTShapeToLengthMap.begin();
|
||||||
|
for ( ; tshape_length != theTShapeToLengthMap.end(); ++tshape_length )
|
||||||
|
{
|
||||||
|
double & L = tshape_length->second;
|
||||||
|
L = segLength( S0, L, Lmin );
|
||||||
|
}
|
||||||
|
theS0 = S0;
|
||||||
|
theMinLen = Lmin;
|
||||||
|
}
|
||||||
}
|
}
|
||||||
//================================================================================
|
|
||||||
|
//=============================================================================
|
||||||
/*!
|
/*!
|
||||||
* \brief Compute segment length for all edges
|
* \brief Computes segment length for an edge of given length
|
||||||
* \param theMesh - The mesh
|
|
||||||
* \param theTShapeToLengthMap - The map of edge to segment length
|
|
||||||
*/
|
*/
|
||||||
//================================================================================
|
//=============================================================================
|
||||||
|
|
||||||
static void computeLengths( SMESHDS_Mesh* aMesh,
|
double StdMeshers_AutomaticLength::GetLength(const SMESH_Mesh* theMesh,
|
||||||
map<const TopoDS_TShape*, double> & theTShapeToLengthMap)
|
const double theEdgeLength)
|
||||||
|
throw(SALOME_Exception)
|
||||||
{
|
{
|
||||||
theTShapeToLengthMap.clear();
|
if ( !theMesh ) throw SALOME_Exception(LOCALIZED("NULL Mesh"));
|
||||||
|
|
||||||
TopoDS_Shape aMainShape = aMesh->ShapeToMesh();
|
SMESHDS_Mesh* aMeshDS = const_cast< SMESH_Mesh* > ( theMesh )->GetMeshDS();
|
||||||
|
if ( theMesh != _mesh )
|
||||||
// Find length of longest and shortest edge
|
|
||||||
double Lmin = DBL_MAX, Lmax = -DBL_MAX;
|
|
||||||
TopTools_IndexedMapOfShape edgeMap;
|
|
||||||
TopExp::MapShapes( aMainShape, TopAbs_EDGE, edgeMap);
|
|
||||||
for ( int i = 1; i <= edgeMap.Extent(); ++i )
|
|
||||||
{
|
{
|
||||||
TopoDS_Edge edge = TopoDS::Edge( edgeMap(i) );
|
computeLengths( aMeshDS, _TShapeToLength, _S0, _minLen );
|
||||||
//if ( BRep_Tool::Degenerated( edge )) continue;
|
_mesh = theMesh;
|
||||||
|
|
||||||
Standard_Real L = SMESH_Algo::EdgeLength( edge );
|
|
||||||
if ( L < DBL_MIN ) continue;
|
|
||||||
|
|
||||||
if ( L > Lmax ) Lmax = L;
|
|
||||||
if ( L < Lmin ) Lmin = L;
|
|
||||||
|
|
||||||
// remember i-th edge length
|
|
||||||
theTShapeToLengthMap.insert( make_pair( getTShape( edge ), L ));
|
|
||||||
}
|
|
||||||
|
|
||||||
// Compute S0
|
|
||||||
|
|
||||||
// image attached to PAL10237
|
|
||||||
|
|
||||||
// NbSeg
|
|
||||||
// ^
|
|
||||||
// |
|
|
||||||
// 10|\
|
|
||||||
// | \
|
|
||||||
// | \
|
|
||||||
// | \
|
|
||||||
// 5| --------
|
|
||||||
// |
|
|
||||||
// +------------>
|
|
||||||
// 1 10 Lmax/Lmin
|
|
||||||
|
|
||||||
const int NbSegMin = 5, NbSegMax = 10; // on axis NbSeg
|
|
||||||
const double Lrat1 = 1., Lrat2 = 10.; // on axis Lmax/Lmin
|
|
||||||
|
|
||||||
double Lratio = Lmax/Lmin;
|
|
||||||
double NbSeg = NbSegMin;
|
|
||||||
if ( Lratio < Lrat2 )
|
|
||||||
NbSeg += ( Lrat2 - Lratio ) / ( Lrat2 - Lrat1 ) * ( NbSegMax - NbSegMin );
|
|
||||||
|
|
||||||
double S0 = Lmin / (int) NbSeg;
|
|
||||||
MESSAGE( "S0 = " << S0 << ", Lmin = " << Lmin << ", Nbseg = " << (int) NbSeg);
|
|
||||||
|
|
||||||
// Compute segments length for all edges
|
|
||||||
|
|
||||||
// S = S0 * f(L/Lmin) where f(x) = 1 + (2/Pi * 7 * atan(x/5) )
|
|
||||||
// =>
|
|
||||||
// S = S0 * ( 1 + 14/PI * atan( L / ( 5 * Lmin )))
|
|
||||||
|
|
||||||
const double a14divPI = 14. / PI, a5xLmin = 5 * Lmin;
|
|
||||||
map<const TopoDS_TShape*, double>::iterator tshape_length = theTShapeToLengthMap.begin();
|
|
||||||
for ( ; tshape_length != theTShapeToLengthMap.end(); ++tshape_length )
|
|
||||||
{
|
|
||||||
double & L = tshape_length->second;
|
|
||||||
L = S0 * ( 1. + a14divPI * atan( L / a5xLmin ));
|
|
||||||
}
|
}
|
||||||
|
double L = segLength( _S0, theEdgeLength, _minLen );
|
||||||
|
return L / (theCoarseConst + theFineConst * _fineness);
|
||||||
}
|
}
|
||||||
|
|
||||||
//=============================================================================
|
//=============================================================================
|
||||||
@ -203,7 +244,7 @@ double StdMeshers_AutomaticLength::GetLength(const SMESH_Mesh* theMesh,
|
|||||||
if ( theMesh != _mesh )
|
if ( theMesh != _mesh )
|
||||||
{
|
{
|
||||||
SMESHDS_Mesh* aMeshDS = const_cast< SMESH_Mesh* > ( theMesh )->GetMeshDS();
|
SMESHDS_Mesh* aMeshDS = const_cast< SMESH_Mesh* > ( theMesh )->GetMeshDS();
|
||||||
computeLengths( aMeshDS, _TShapeToLength );
|
computeLengths( aMeshDS, _TShapeToLength, _S0, _minLen );
|
||||||
_mesh = theMesh;
|
_mesh = theMesh;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
@ -51,9 +51,18 @@ public:
|
|||||||
StdMeshers_AutomaticLength(int hypId, int studyId, SMESH_Gen * gen);
|
StdMeshers_AutomaticLength(int hypId, int studyId, SMESH_Gen * gen);
|
||||||
virtual ~ StdMeshers_AutomaticLength();
|
virtual ~ StdMeshers_AutomaticLength();
|
||||||
|
|
||||||
|
/*!
|
||||||
|
* \brief Computes segment for a given edge
|
||||||
|
*/
|
||||||
double GetLength(const SMESH_Mesh* aMesh, const TopoDS_Shape& anEdge)
|
double GetLength(const SMESH_Mesh* aMesh, const TopoDS_Shape& anEdge)
|
||||||
throw(SALOME_Exception);
|
throw(SALOME_Exception);
|
||||||
|
|
||||||
|
/*!
|
||||||
|
* \brief Computes segment length for an edge of given length
|
||||||
|
*/
|
||||||
|
double GetLength(const SMESH_Mesh* aMesh, const double edgeLength)
|
||||||
|
throw(SALOME_Exception);
|
||||||
|
|
||||||
/*!
|
/*!
|
||||||
* \brief Set Fineness
|
* \brief Set Fineness
|
||||||
* \param theFineness - The Fineness value [0.0-1.0],
|
* \param theFineness - The Fineness value [0.0-1.0],
|
||||||
@ -89,7 +98,7 @@ public:
|
|||||||
protected:
|
protected:
|
||||||
std::map<const TopoDS_TShape*, double> _TShapeToLength;
|
std::map<const TopoDS_TShape*, double> _TShapeToLength;
|
||||||
const SMESH_Mesh* _mesh;
|
const SMESH_Mesh* _mesh;
|
||||||
double _fineness;
|
double _fineness, _S0, _minLen;
|
||||||
};
|
};
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user